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MCP3008T Datasheet(PDF) 11 Page - Microchip Technology |
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MCP3008T Datasheet(HTML) 11 Page - Microchip Technology |
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11 / 40 page  © 2008 Microchip Technology Inc. DS21295D-page 11 MCP3004/3008 Note: Unless otherwise indicated, VDD = VREF = 5V, fCLK = 18* fSAMPLE, TA = +25°C. FIGURE 2-25: Effective Number of Bits (ENOB) vs. VREF. FIGURE 2-26: Spurious Free Dynamic Range (SFDR) vs. Input Frequency. FIGURE 2-27: Frequency Spectrum of 10 kHz Input (Representative Part). FIGURE 2-28: Effective Number of Bits (ENOB) vs. Input Frequency. FIGURE 2-29: Power Supply Rejection (PSR) vs. Ripple Frequency. FIGURE 2-30: Frequency Spectrum of 1 kHz Input (Representative Part, VDD = 2.7V). 9.00 9.25 9.50 9.75 10.00 0.00.5 1.01.5 2.0 2.5 3.03.5 4.0 4.5 5.0 V REF (V) VDD = VREF = 2.7 V fSAMPLE = 75 ksps VDD = VREF = 5 V fSAMPLE = 200 ksps 0 10 20 30 40 50 60 70 80 90 100 110 100 Input Frequency (kHz) VDD = VREF = 5 V fSAMPLE = 200 ksps VDD = VREF = 2.7 V fSAMPLE = 75 ksps -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0 20000 40000 60000 80000 100000 Frequency (Hz) VDD = VREF = 5 V FSAMPLE = 200 ksps FINPUT = 10.0097 kHz 4096 points 8.0 8.2 8.4 8.6 8.8 9.0 9.2 9.4 9.6 9.8 10.0 110 100 Input Frequency (kHz) VDD = VREF = 2.7V fSAMPLE = 75 ksps VDD = VREF = 5V fSAMPLE = 200 ksps -70 -60 -50 -40 -30 -20 -10 0 1 10 100 1000 10000 Ripple Frequency (kHz) VDD = VREF = 5 V fSAMPLE = 200 ksps -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0 5000 10000 15000 20000 25000 30000 35000 Frequency (Hz) VDD = VREF = 2.7 V fSAMPLE = 75 ksps fINPUT = 1.00708 kHz 4096 points |
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